Amstrad CPC464 Plus Service Manual (1990)(Amstrad)

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464 PLUS HOME COMPUTER

6128 PLUS HOME COMPUTER

GX4000 GAMES CONSOLE

MM 12 MONOCHROME MONITOR

CM 14 COLOUR MONITOR

SERVICE MANUAL

CONTENTS Page

Safety Tests 2

464 PLUS SECTION 3

Electrical Adjustments 4

Main/Cassette/Hold/LED P.C.B. (Top View) 5

Main/Cassette/Hold/LED P.C.B. (Bottom View) 6

Tape P.C.B. 6

Gate Array/Output Interface Schematic Diagram 7

CPU/Connection Interface Schematic Diagram 8

Video Conversion/Memory Schematic Diagram 9

Cassette Interface Schematic Diagram 10

Key Matrix (Applies to 464 & 6128) 1 1

Mechanical Exploded View & Parts List 1 2

Deck Exploded View 1 3

Electrical Parts List 14

6128 PLUS SECTION 15

Electrical Adjustment 1 5

Main/Cassette Hold/LED P.C.B. (Top View) 16

Main/Cassette Hold/LED P.C.B. (Bottom View) 17

Gate Array/Output Interface Schematic Diagram 18

CPU/Connection Interface Schematic Diagram 19

Video Conversion/Memory Schematic Diagram 20

Mechanical Exploded View & Parts List 21

Electrical Parts List 22

GX4000 SECTION 23

Electrical Adjustment 23

Main P.C.B. (Top View) 24

Main P.C.B. (Bottom View) 25

Gate Array/Output Interface Schematic Diagram 26

CPU/Connection Interface Schematic Diagram 27

Video Conversion/Memory Schematic Diagram 28

Power Regulator Schematic Diagram 29

RGB Converter Schematic Diagram 30

Cabinet Exploded View & Parts List 31

Main P.C.B. (FRANCE) (Top View) 32

Main P.C.B. (FRANCE) (Bottom View) 33

Power Regulator Schematic Diagram (FRANCE) 34

Output Interface Schematic Diagram (FRANCE) 35

Electrical Parts List 36

MM-1 2 SECTION 37

Electrical Adjustments 37

Monitor/CRT P.C.B. Component Layout 38

Cabinet & Parts List 39

Monitor/CRT Schematic Diagram 40, 41

Electrical Parts List 42

CM-1 4 SECTION 43

Electrical Adjustments 44 - 46

Electrical Parts List 47, 48

Monitor/CRT P.C.B. (Component Layout) 49

Power/Sound Schematic Diagram 50

Monitor Schematic Diagram 51

Cabinet Exploded View & Parts List 52

NOTE TO ENGINEERS
Please Note: That RP1 1 Diagnostic Rom Cartridge is available to diagnose fault conditions on

this range of home computers. Full instructions and analysis is made in the user
instruction manual.

SAFETY TEST

All monitors are tested to the following specifications.

1 . Flash Test: Test at 1.5kV RMS/3 sec between the live and neutral poles of the mains lead and
all accessible metal points on the exterior of the set.

2. Insulation Resistance Test: Test at 1.5kV RMS/ 3 sec between the live and neutral poles of the
mains lead and all accessible metal points on the exterior of the set to show a resistance greater
than 4Mohms.

3. Earth Continuity Test: The resistance of the mains lead shall not exceed O.Sohms.

PLEASE NOTE: When any work is completed on this unit, correct safety tests must be carried out
to ensure continued electrical safety.

PLEASE NOTE: All parts shown with the part number prefix llS are Safety Items and must be
replaced with similar items having an identical safety specification.

All those items may be purchased direct from AMSTRAD pic.

In keeping with our policy of continually improving our service, and the technical quality of our products, we reserve the right to change component types,

manufacturers, sources of supply or technical specification at any time.

AMSTRAD PLC
BRENTWOOD HOUSE, 169 KINGS ROAD, BRENTWOOD, ESSEX CM14 4EF.

464
SECTION

464 PLUS TECHNICAL SPECIFICATION

LSI CHIPS

Z80A processor running at 4MHz.

64K of RAM (over 41 K available when using BASIC).

128K byte ROM cartridge containing BASIC firmware and "Burnin'

Rubber" game.

Gl AY-3-8912 3 voice, 8 octave sound generator chip.

Application Specific Integrated Circuit (ASIC) containing 18,000 gates.

Includes emulation of 6845 video controller and 8255 parallel

peripheral interface. Chip also contains 16,000 bits of storage for

sprite data.

DISPLAY SPECIFICATION (BASIC)

Display Mode Mo de 1

No. of colours
Vertical dots
Horiz. dots
Characters

Mode 2

Mode 3

4 from 27
200
320
40 x 25

2 from 27
200
640
80 x 25

16 from 27
200
160
20 x 25

DISPLAY SPECIFICATION (CARTRIDGE GAMES)

16 mode independent sprites are available in 16 different colours from
those used to draw the main screen.

Both sprite colours and main screen colours may now be chosen from
a palette of 4096. (16 levels of Red, Green and Blue).

Display Mode Model

Mode 2

Mode 3

No. of colours
No. Sprites
Sprite colours

4 from 4096

16

1 6 from 4096

2 from 4096

16

1 6 from 4096

16 from 4096

16

16 from 4096

EXTRA FEATURES (CARTRIDGE GAMES)

Analogue joystick support.

Soft Scroll allows pixel-wise. movement in vertical and horizontal for

fast action games.

Split Screen allows two separate areas to be displayed at once

alleviating the need to re-draw score bars etc.

DMA driven sound allows tunes to play without processor intervention.

Raster Interrupt allows games to change mode and colours at fixed

points on the screen.

KEYBOARD

74 keys - QWERTY style, numeric cluster, cursor and copy cursor,
large enter, shift, caps lock, tab, escape, delete, clear, control.

DATACORDER

Write speed software selectable - 1K baud or 2K baud, read speed
automatically established by software. Write protect interlock. Motor
on/off controlled by software.

ADD-ON ABILITY

8 bit Centronics compatible printer.

1 or 2 digital joysticks or paddles.

IBM Standard analogue joystick. (Some cartridge games).

Light gun.

Various peripherals.

ROM cartridge up to 51 2K byte capacity.

EXTERNAL SOCKETS

3.5 mm stereo jack plug for connection to external amplifier.

2x9 Pin D-type digital paddle/joystick connectors.

15 Pin D-type analogue joystick connector (IBM Standard).

RJ1 1 "telephone" jack for connection of light gun.

25 way D-type connector for 8 bit Centronics interface.

50 way Amphenol style connector with full Z80 bus for addition of

other devices (e.g. serial interface).

8 Pin DIN socket for RGB, sync, Luminance and stereo sound

connection to monitor.

5 mm socket for connection of 5V power supply for monitor.

DIMENSIONS mm (approx.)

Width

Height

Depth

Computer

398

46

297

MM 12 mono motor

329

308

307

CM14 colour monitor

377

348

360

Paddle controller

124

22

56

POWER SUPPLY

MM1 2 Monitor: 240V AC (UK), 220V AC (Europe) 50Hz.

CM14 Monitor: 220-240V AC 50Hz.

ELECTRICAL ADJUSTMENTS

AZIMUTH

1. Connect the probe of oscilloscope to jumper line ®.

2. Insert the tast tape(MII-113, 6.34KHzJ for adjustment into the deck.

3. Press the PLAY button to operate the tape.

4. Adjust the screw fl) to maximize the waveform as shown below.

LUMI. SIGNAL OUTPUT LEVEL

1. Connect the oscilloscope to 3 pin of J 102.

2. Adjust VR101 so that the signal becomes 1.65V as shown in Fig. 1,

MAJOR COMPONENTS LOCATION GUIDE

□

VRtOl

LUMI. SI&HM.
OUTPUT

MAIM P.C.BOARD

-JUHPER©

Y~\.

TAPE P.C.BOARD

MAIN/CASSITTE HOLD /LED

TOP

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T

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00 _

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U U

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C46 I

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JD03

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5p

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R30
R29
R28
R23
R2S
R25
R24

|/->4

^xotf TTTT

do: *S

NC02

R44 R43

R42 R41

R40 R39

R38 R37

R36 R3_5

R34 R33

REFcNQc
100

J001

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— "j"'CM| mi cd i Loi

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R78 C5i C30

R87

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RSI

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RS7

R5S

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R52

R47

RSI

R48

R5G

R49

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(BLUE)

1C4

caoQQO^ CD Ot| s

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CD

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MAIN/CASSETTE HOLD /LED

TAPE

BOTTOM

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35

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6

GATE ARRAY / OUTPUT INTERFACE SCHEMATIC DIAGRAM

POWER
J194
DC 2.35FRI
HECO470-O1-64O

QP101:M254=H59-09-37-39eSP) D128-0123 1SS132

OR EG. JP181

JOYSTICK

9

D-SUB

OREO.

CJP102-.M254-M99-09-37-396SP OH
DELC-J9PAF-1L91 /l

QD102:M254«M59-15-37-395SS1 OR EO.)

JD1I2
DALC-J15SAF-1L91
OREO. ANALOGUE

M245 ONLY

NOTE : R145,X101,C128,C129,L102
IS NOT USE

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE.

F,G,H,I, AND J MARKED PROUND THE PARTS
IN THE SCHEMATIC DIAGRAM INDICATES
THE FOLLOWING ERROR RATE.
F:±lX,0:±SX*H:±3*,i: ±4X,J:±3K

FIT R128 FOR 128K DRAM
FIT R129 FOR DISC VERS
FIT R130 FOR 8-BIT PRINTER

CPU / CONNECTION INTERFACE SCHEMATIC DIAGRAM

FCN-685J050-L/S OR EQ .

JD181 EXPANSION 58WfiY RIBBON CONN.
/ - SOUND

QUAD 2 -INPUT NOR GATE

ICT16

SN74LS27N

CD0134)
FDD 2b UflY CONN.
.068G6QO07A

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING ANO SUBJECT TO CHANGE WITHOUT NOTICE.

8

VIDEO CONVERSION / MEMORY SCHEMATIC DIAGRAM

J162
MONITOR DIN

J183
I AUDIO OUT STEREO
HSJ1061-O1-440

KETBOARO X
CP183

THIS SCHEMATIC DIAGRAM IS THE! LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE

'sA^A^A'sA

F,G,H,I, AND J MARKED AROUND THE PARTS
IN THE SCHEMATIC DIAGRAM INOICATES
THE FDLLOUING ERROR RATE.
F: ±154 ,G:±2Ji,H:±3X,l: ±A'A ,J: ±5V.

9

SCHEMATIC DIAGRAM
CASSETTE INTERFACE

<H>

B4S-EH-4
CP3B2T

X

QUAD OP AMP

IC301

LA6324

R387
-« VA &

C385

58Y8 47
SU381-1 CLW6A
REC . PLAT

HI

fin

PC8301
MT0O03

Q381 '
KTCIMSY'

C383
-HI

-©

SU381-2

REC _PLAY
DO

*¥%

C302
— II—

R385

r:

■T m

R318

R316
33K

1^-h

LA&324
Cl/43

— ^—

R3B1

L381

— jqnr* a—

zn

G4S-1112P-1-B-19

LEAF PLAY OFF
SWITCH FF REW ON
SW382 LSA-1115TN

C0381 S318074A

PLAT ON INPUT

DATA OUT
DATA IN

GNO
MOTOR

CP383 B4B-EH-A

,1

7

LEAF SWITCH

3> •

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE.

10

KEY MATRIX
(Applies to 464 & 6128)

-X)

(T

LO

n

n

00

(^

L J

CO

Ul

K3

CJ

QUER FLEX
CP104

(?)

©

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(0

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00

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70

i -^

(30

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O 99

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CD 0J
LO

~n

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rn

-©

-e

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE.

SW101 ESU44LN027AA

-9622

11

MECHANICAL EXPLODED VIEW

PCB401

CPC 464 PLUS CABINET PARTS LIST

Ref. No.

Description

Part No.

Cabinet Parts

101

Cartridge ASSY (UK)

270778

101

Cartridge ASSY (Spain)

270797

101

Cartridge ASSY (France)

270796

103

Cabinet Top ASSY
Cabinet Top
Plate Brand
Plate Reflection

270773

104

Lid Cassette
Plate Cassette Lid

270777

105

Button Power (A)

271618

106

Button Power (B)

271619

107

Bracket Power Switch

271620

108

Spring Cassette Lid

109

Button Deck(REC)

270859

110

Button Deck

270776

111

Spacer Button Deck

270806

112

Cord Clamp No PEC-034-0

113

Cabinet Bottom Assy

Leg Rubber
Sheet Rating

270774

12

DECK EXPLODED VIEW

f

405 ^\A 406

303-^rJ

305 — a i
-301

-401

For parts list please refer to miscellaneous section.

13

464 PLUS ELECTRICAL PARTS LIST

Ref. No.

Description

Part No.

IC's

IC101

IC AMS40489

40489

IC102

ICZ8400AB1N

40080

IC108

ICMC74HC4051N

270752

IC109

IC LA6393D

270997

IC110, 111

ICKM41464AP-12

40239

IC114

fCAY-3-8912

40001

IC115

IC AMS40464

40464

IC116

IC PC74HCT02P

270999

IC301

IC LA6324

170112

Transistor

Q101,

TRKTC1815Y-T

170447

103-107,301

Diodes

D101

DLEDSLZ-255B-21A/BT1

170866

D110, 111,

D1SS132T-77

171582

120-127,

201 , 202

D1 28-1 30

DMTZ4.7BT-77ZENER

175021

D301

D1N4002RECT

175440

Coils and Indue

tors

L101

Filter Line ESD-R-12C

270751

L301

Coil Inductor LAL03TA820K

270798

Switches

SW101

Switch Keyboard
ESU44LN027AA (UK)

270779

SW101

Switch Keyboard
ESU44LN027DA (Spain)

270795

SW101

Switch Keyboard
ESU44LN027CA (France)

270794

SW102

Switch Slide ESD-3975

170002

SW301

Switch Slide CL106A

270753

SW302

Switch Leaf LSA-1115TN

270755

PCB's

PCB101

PCBASSYMC0122

PCB102

PCBASSYMS0189

PCB103

PCBASSYMS0190

PCB301

PCB ASSY MT0003

PCB401

PCBASSYMC0121

Miscellaneous

NR102

Res. Network EXB-P88222J

270800

PD001

Paddle 140Z001 -40991

270792

RY301

Relay G4S-1112P-1-B-19

170123

X102

Crystal CX0-824C 40MHz

270772

CTD01

Cassette Deck TN-21ZH-754

270775

345

RF Belt

270805

347

Main Belt

270807

350

Motor

270858

Jacks

J101

Jack Modular 215876-1

271010

J102

Jack Din CSK1 50-81 -30-244

271011

J103

Jack RCA 3.5
HSJ1061-01-440

271012

J104

JackDCHEC0470-01-640

271008

J105

Socket ICDILB40P-1115TN

Variable Resistc

>rs

VR101 VRSF

VG042M102

271609

Ref. No.

Description

Part No.

Resistors: Carbon VeW

22 OHM

R105, 189, 192

152156

33 OHM

R1 46-1 54, 156, 157, 168, 169

152158

82 OHM

R180

152164

91 OHM

R172

152165

120 OHM

R181

152167

150 OHM

R113

152168

220 OHM

R187, 195, 198

152170

330 OHM

R175

152172

470 OHM

R186

152174

680 OHM

R174, 182

152176

910 OHM

R171

250430

1KOHM

R104, 161-163, 190

152179

1.2KOHM

R173

152180

1.1KOHM

R102, 103, 115, 116, 118-120

152183

3.3KOHM

R176-178, 184, 188

152185

4.7KOHM

R101, 127,210

152188

5.6KOHM

R183

152189

10KOHM

R114, 117, 129, 130,
158-160, 164, 167

152194

15KOHM

R179

152196

22KOHM

R165, 166, 191

152198

100KOHM

R194, 197

152209

180KOHM

R1 23-1 26

152212

220KOHM

R193, 196

152213

Resistors: Carbon 1 AW

56 OHM

R301

240507

100 OHM

R310

193588

560 OHM

R307

193196

820 OHM

R318

10054

3.3KOHM

R315, 319

193597

4.7KOHM

R314, 317

240510

5.6KOHM

R309

10079

10KOHM

R304, 308

240511

12KOHM

R312

10087

18KOHM

R302, 306

1 93700

33KOHM

R313, 316

1 93703

47KOHM

R303

240512

470K OHM

R305

193708

1MOHM

R311

193710

Resistors: Metal VeW

1KOHM

R132, 134, 136, 138,
140, 142

271025

2KOHM

R131, 133, 135, 137, 139,
141, 143, 144

271026

6.34KOHM

R170

270785

Capacitors: Ceramic

33PF 50V

C302

150514

100PF50V

C127, 131

24016

200PF50V

C307

240234

330PF 50V

C124, 125

193722

0.001 UF 50V

C306

157679

0.022UF 50V

C309

21027

0.1 UF 12V

C101, 102, 108, 110, 111,
114, 115, 117, 118,401

175181

Capacitors: Electrolytic

0.47UF 50V

C305

157670

1UF50V

C137, 138

157563

10UF16V

C126, 132, 134,310

157581

22UF10V

C304

270042

47UF16V

C151

157629

100UF10V

C135

193226

100UF16V

C301

157568

470UF10V

C130, 136,308

270963

Capacitors: Polyester

0.047UF10V C1303

170442

14

6128 ELECTRICAL ADJUSTMENT

LUMI. SIGNAL OUTPUT LEVEL

1. Connect the oscilloscope to 3 pin of J102.

2. Adjust VR101 so that tie signal becomes 1.65V as shown in Fig. 1.

6128
SECTION

/

^

—

l.(

SV

\

f

Fig. 1

MAJOR COMPONENTS LOCATION GUIDE

□

VR101
LUMI. StGUW_
OUTPUT

MAIN RC.BOARD

6128 PLUS TECHNICAL
SPECIFICATION

LSI CHIPS

Z80A processor running at 4MHz.

1 28K of RAM arranged in two 64K banks (over 41 K available when

using BASIC, 61 K available to CP/M Plus).

128K byte ROM cartridge containing BASIC firmware and "Burnin'

Rubber" game.

Gl AY-3-8912 3 voice, 8 octave sound generator chip.

Application Specific Integrated Circuit (ASIC) containing 18,000 gates.

Includes emulation of 6845 video controller and 8255 parallel

peripheral interface. Chip also contains 16,000 bits of storage for

sprite data.

upd765A disk controller.

3" 1 70K built-in disk drive compatible with CPC models. Supplied disk

contains CP/M Plus operating system.

36 way Amphenol connector for second disk drive.

DISPLAY SPECIFICATION (BASIC)

Display Mode

Mode 1

Mode 2

Mode 3

No. of colours
Vertical dots
Horiz. dots
Characters

4 from 27
200
320
40 x 25

2 from 27
200
640
80 x 25

16 from 27
200
160
20 x 25

DISPLAY SPECIFICATION (CARTRIDGE GAMES)

16 mode independent sprites are available in 16 different colours from
those used to draw the main screen.

Both sprite colours and main screen colours may now be chosen from
a palette of 4096. (16 levels of Red, Green and Blue).

Display Mode Mode 1

Mode 2

Mode 3

No. of colours
No. Sprites
Sprite colours

4 from 4096

16

1 6 from 4096

2 from 4096

16

16 from 4096

16 from 4096

16

16 from 4096

EXTRA FEATURES (CARTRIDGE GAMES)

Analogue joystick support.

Soft Scroll allows pixel-wise movement in vertical and horizontal for

fast action games.

Split Screen allows two separate areas to be displayed at once

alleviating the need to re-draw score bars etc.

DMA driven sound allows tunes to play without processor intervention.

Raster Interrupt allows games to change mode and colours at fixed

points on the screen.

KEYBOARD

74 keys - QWERTY style, numeric cluster, cursor and copy cursor,
large enter, shift, caps lock, tab, escape, delete, clear, control.

DATACORDER

Write speed software selectable - 1 K baud or 2K baud, read speed
automatically established by software. Write protect interlock. Motor
on/off controlled by software.

ADD-ON ABILITY

8 bit Centronics compatible printer.

1 or 2 digital joysticks or paddles.

IBM Standard analogue joystick. (Some cartridge games).

Light gun.

Various peripherals.

ROM cartridge up to 51 2K byte capacity.

EXTERNAL SOCKETS

3.5 mm stereo jack plug for connection to external amplifier.

2 x 9 Pin D-type digital paddle/joystick connectors.

15 Pin D-type analogue joystick connector (IBM Standard).

RJ1 1 "telephone" jack for connection of light gun.

25 way D-type connector for 8 bit Centronics interface.

50 way Amphenol style connector with full Z80 bus for addition of

other devices (e.g. serial interface).

8 Pin DIN socket for RGB, sync, Luminance and stereo sound

connection to monitor.

5 mm socket for connection of 5V power supply for monitor.

DIMENSIONS mm (approx.)

Width

Height

Depth

Computer 398 46 297

MM1 2 mono motor 329 308 307
CM14 colour monitor 377 348 360

Paddle controller 124 22 56

POWER SUPPLY

MM12 Monitor: 240V AC (UK), 220V AC (Europe) 50Hz.

CM14 Monitor: 220-240V AC 50Hz.

15

PRINTED CIRCUIT BOARDS
MAIN/CASSETTE HOLD/LED

TOP

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8 rtS0 8 R8. SR8a

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PRINTED CfltSCUIT BOARD
MAIN/ CASSETTE HOLD /LED

BOTTOM

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CD ^"

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3

C40 C37

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17

GATE ARRAY / OUTPUT INTERFACE SCHEMATIC DIAGRAM

DISK Dl
POWI
(GDI 8 30
8GI3140A

POWER
J104
DC 2.35FAI
HEC0470-01-640

CJP101:M254-M59-09-37-»8Sf) 012B-D123 1SS132

QP102:M254*M59-09-37-39eSP OREd^'" ggg

CJDt02:M254-M59-15-37-395SS1 OR EQ.)

, FIRE2

oreo. analogue
joyst:

M245 ONLY

R145,X101,C128,C129,L102
S NOT USE

THIS SCHEMATIC DIAGRAM IS THE LATEST RT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE

F,G,H,I, AND J MARKED AROUND THE PARTS
IN THE SCHEMATIC DIAGRAM INDICATES
THE FOLLOWING ERROR RATE.
F:±1X,G: ±2X / H:±'3X,I:±4X,J:±3X

FIT

R128

FOR

128K DRPM

FIT

R129

FOR

DISC UERS

FIT

R130

FOR

8-BIT PRINTER

18

CPU / CONNECTION INTERFACE SCHEMATIC DIAGRAM

FCN-685J050-L/S OR EQ.

JD1B1 EXPANSION 5BUAY RIBBON CONN
SOUND

C20UO

FDO 26 UAY CONN.

068G6QOO7A
i~C Z\

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
Of PRINTING ANO SUBJECT TO CHANGE UITHOUT NOTICE.

19

VIDEO CONVERSION / MEMORY SCHEMATIC DIAGRAM

CSK 150-61-30- 244

J102
MONITOR DIN

64K D-RAM
IC110-IC1 3

KM41464AP-12

i NWE

PR? 10

tJt / RRfi I

/ gas

RR4

^fi3_y_

RR? 12

RR1 13

JtAB **

ucc

/WE
/OE

A3 Dl
fi2 D2

/RRS
/CRS

GND

i

9

is

T ^

IClll

1 -<

NUE 4

ucc

/WE
/OE
R7

R5

A

i

I

/

RR7 IB

Rflf, ^

/

RRIi 7

J. BOB

" £JH\

15 SDgN

17 RDJN

RRS 1|

RR? Eg

-BB\ 13

RRfl H

A? D2

fll D3
RB D4

/RRS
/CRS

GND

UZbjjI

17 RD7\

:" Cicuz)

9

» ^ NWE 4

vcc

/WE

/OE
R7
fit

R5

, * 1

P R07 IB

' / RAf, &

1/ RR.^ 7

J103
AUDIO OUT STEREO
HSJ1O61-01-440

uauu

C ~) : M254 ONLY

NOTE: THIS SCHEMATIC DIPGRAM IS THE LRTEST RT THE TIME
Of PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE.

F,G,H,I, AND J MARKED PROUND THE PARTS
IN THE SCHEMATIC DIAGRAM INDICATES
THE r'OLLOWING ERROR RATE.
F : ± 1 % , G ■ ± 2 Y. t H : ± 3 'A , I : ± 4 V. , J : ±SY.

20

MECHANICAL EXPLODED VIEW

PCB401

PCB101

203

DD201

^

6128 PLUS CABINET PARTS LIST

Ret. No.

Description

Part No.

Cabinet Parts

101

Cartridge Assy UK

410891

101

Cartridge Assy France

410901

101

Cartridge Assy Spain

410911

103

Cabinet Top ASSY
Cabinet Top

270773

104

Button Power (A)

271618

105

Button Power (B)

271619

106

Bracket Power Switch

271620

107

Frame FDD

271621

108

Cabinet Bottom Assy
Leg Rubber
Sheet Rating

270774

204 1

21

6128 PLUS ELECTRICAL PARTS LIST

Ref. No.

Description

Part No.

ICs

IC101

IC AMS40489

40489

IC102

ICZ840GAB1N

40080

IC103

IC SED 9420CAC

171034

IC104

IC Z765APS

40018

IC105, 106

IC SN74LS38N

190056

IC107

ICMC74HC14AN

193024

IC108

ICMC74HC4051N

270752

IC109

IC LA6393D

270997

IC110-113

ICKM41464AP-12

40239

IC114

ICAY-3-8912

40001

IC115

IC AMS40464

40464

IC116

IC PC74HCT02P

170112

Transistor

Q1 03-1 07

TRKTC1815Y-T

1 70447

Diodes

D101

D LED SLZ-255B021 A/BT1

170866

D110, 111,

D1SS132T-77

171582

120-127,

201,202

D128-130

D MTZ4.7BT-77

175021

Coils and Indue

tors

L101

Filter Line ESD-R-12C

270751

L301

Coil Choke SN8D-500

271605

Switches

SW101

Switch Keyboard
ESU44LN027AA (UK)

270779

SW101

Switch Keyboard
ESU44LN027DA (Spain)

270795

SW101

Switch Keyboard
ESU44CN027CA (France)

270794

SW102

Switch Slide ESD-3975

170002

PCB's

PCB101

PCBASSYMC0122

PCB102

PCBASSYMS0189

PCB103

PCBASSYMS0190

PCB401

PCBASSYMC0121

Miscellaneous

CFD101

CFD Ansoft 3"
EBFCF2SS1AR5

271610

FDD201

FDDEME-157

271611

NR101

Res. Network EXB-F7E681 J

270862

NR102

Res. Network EXB-P88222J

270800

PD001

Paddle 140Z001 -40991

270792

X102

Crystal CXO-824C 40MHz

270772

Jacks

J101

Jack Modular 215876-1

271010

J102

Jack DIN CSK1 50-81 -30-244

271011

J103

Jack RCA 3.5
HSJ1061-01-440

130010

J104

JackDCHEC0470-01-640

271008

J105

Socket IC DILB40P-8J

176096

Variable Resist(

KS

VR101

VRSFVG042M102

270753

Ref. No.

Description

Part No.

Resistors: Carbon VeW

1 .5 OHM

R108

152140

22 OHM

R105, 189, 192

152156

33 OHM

R1 46-1 57, 168, 169

152158

82 OHM

R180

152164

91 OHM

R172

152165

120 OHM

R181

152167

150 OHM

R113

152168

220 OHM

R187, 195, 198

152170

330 OHM

R175

152172

470 OHM

R186

152174

680 OHM

R174, 182

152176

910 OHM

R171

250430

1KOHM

R161-163, 190

152179

1.2KOHM

R173

152180

2.2KOHM

R102, 103, 107, 112, 115,
116, 118-120

152183

3.3KOHM

R1 76-1 78, 184, 188

152185

4.7KOHM

R101, 127

152188

5.6KOHM

R183

152189

6.8KOHM

R111

152190

10KOHM

R114, 117, 128-130, 158-160,
164, 167

152194

15KOHM

R179

152196

22K OHM

R165, 166, 191

152198

33K OHM

R109

152200

82KOHM

R110

152207

100KOHM

R194, 197

152209

180KOHM

R1 23-1 26

152212

220KOHM

R193, 196

152213

470K OHM

R210

152217

820K OHM

R106

152221

Resistors: Carbon 1 AW

100 OHM R199

193588

Resistors: Metal VeW

1KOHM

R132, 134, 136, 138,
140, 142

271025

2KOHM

R131, 133, 135, 137, 139,
141, 143, 144

271026

6.34KOHM

R170

270785

Capacitors: Ceramic

100PF50V

C127, 131

24016

330PF 50V

C124, 125

193722

0.1UF12V

C101, 102, 104, 108, 110,
111-115, 117, 118,401

175181

Capacitors: Electrolytic

1UF50V

C137, 138

157563

10UF16V

C126, 132, 134

157581

47UF16V

C151

157629

100UF10V

C135, 136

193226

470UF10V

C130, 139

270963

Capacitors: Polyester

0.001 UF 50V

C122

240250

0.01 UF 50V

C120, 123, 103

250419

0.047UF10V

C121

170442

22

GX4000
SECTION

GX4000 TECHNICAL SPECIFICATION

LSI CHIPS

Z80 processor running at 4MHz.

64K RAM.

128K byte ROM cartridge containing "Burnin' Rubber" game.

Gl AY-3-8912 3 voice, 8 octave sound generator chip.

Application Specific Integrated Circuit (ASIC) containing 18,000 gates.

Includes emulation of 6845 video controller and 8255 parallel

peripheral interface. Chip also contains 16,000 bits of storage for

sprite data.

ADD-ON ABILITY

1 or 2 digital joysticks or paddles.

IBM Standard analogue joystick. (Some cartridge games).

Light gun.

ROM cartridge up to 51 2K byte capacity.

DISPLAY SPECIFICATION

16 mode independent sprites are available in 16 different colours from
those used to draw the main screen.

Both sprite colours and main screen colours may now be chosen from
a palette of 4096. (16 levels of Red, Green and Blue).

Display Mode Mode 1

Mode 2

ModeS

No. of colours 4 from 4096 2 from 4096 1 6 from 4096

No. Sprites 16 16 16

Sprite colours 1 6 from 4096 1 6 from 4096 1 6 from 4096

EXTRA FEATURES

Analogue joystick support.

Soft Scroll allows pixel-wise movement in vertical and horizontal for

fast action games.

Split Screen allows two separate areas to be displayed at once

alleviating the need to re-draw score bars etc.

DMA driven sound allows tunes to play without processor intervention.

Raster Interrupt allows games to change mode and colours at fixed

points on the screen.

EXTERNAL SOCKETS

3.5 mm stereo jack plug for connection to external amplifier.

2 x 9 Pin D-type digital paddle/joystick connectors.

15 Pin D-type analogue joystick connector (IBM Standard).

RJ1 1 "Telephone" jack for connection of light gun.

Phono socket for UHF TV connection - lead supplied.

8 Pin DIN socket for RGB, sync, Luminance and stereo sound

connection to monitor.

21 Pin Scart/Peritel socket for direct connection to TV.

6 mm socket for connection of 5V power supply from monitor*. .

6 mm socket for connection of AC adaptor (AC adaptor supplied).

* GX4000 can be connected to MM12 or CM14 monitor and powered
from the monitor.

DIMENSIONS mm (approx.)

Width

Height

Depth

GX4000 250

44

184

POWER SUPPLY

GX4000 PSU AC adaptor 220V (EURO) 240V (UK) 50 Hz.

ELECTRICAL ADJUSTMENT

REQUNECY

1. Connect the set to a normal TV set with the RF cable.

2. Insert the cartridge into the set.

3. Adjust the coil in the RF modulator of set so that letters are shown in
the picture.

23

MAIN P.C.B. (Top View)

mmmmi

8 T

.^Y^

«3*f ^ 3 - S

S — <,!* x CI 36

k '!- "ass - .i c ' 39 ■"■

| S R,44 |2 RIM

ZfQG v.-: 2CI38

n ~ c "» Rill "R135

R_oq

JD j 30 . ;□

ei02 :+

T 11 rtsi

, j RT34 ig *. r

RI84 : R1|7 RI33TP104 :

RflSKf' : ftftw' R?£

n «i -th ffi HI-
G1 40 Ct4t Cf42

R191

i ^7 ™- R, l? RI93 t *tf i^ I

r l¥, S C.31 - n fa |

1 2 ^m R84 : C33

1^ ^o|S ^£_ ; . iil

J* 02

':• Rl 23 :

I' "' 0l r\0 31 8 ' |

24

BOTTOM

C10O ^ 0CI38 |

1 I a- * QtflO 918* Q182 ^13183 t

|l I C27 5^ R1 ^" R,W RISr) §

^'' 4

RISO

Lt<!3

v^;:.;.-:.:: ■::::■

0110

C120

iBws'i^r*!

r 2 "'^xiot

CI 36

C139

h=1

T t* r.
■ >49

f;!siS.«:S( !**"oiis

GJof~

C1M

.Rv#-

R13^:

op]

'^If

rU

:d-]

q\2Y 21

R134

Rr !l R L2? ; R IB T W;

QtSO Q18* Q182 ,7^183

R27

R32 p-, S ^ * <L » ^* 5 -

R33 r^LS -^ I #': : S Hh R191

m: 1 S C ^ CH - C1rt2 * *i

I = ^7*Wfc

^ -rS :: O: LK?

2J- 8 K'l 03 • # R141

8 C131 :- :

* R 12 7 & ?1

2 : bl 7 . 2i

CI 21

^S I 7 K t* g, : ^gg, : Diai

«&&

^123

JIM

,. |84|;

R72

I

25

GATE ARRAY / OUTPUT INTERFACE
SCHEMATIC DIAGRAM

26

1411 TSU

' BaQ3f ^TTTT rS*

; 8S»» ta:S

sna^ g rdb
802

R04

-Si if RD4

-* 03 r*r RD5

rAW

isr

4f RDl

-if" RD2

4jr RD3

TIF RDt

-If- /RfiS
**- /COSl

-li-J /cose

'5 I —

8 555 in

/t *. id ro ^ <*

-0-<ppt?t^?^^^^^7^

HsieiliEEEEEEiHifiBggq

09

COlft

C017

Cfllfc

C015

C014

R15

014

fil3

012

fill

RH

ftf

08

07

05
04
03
02

SS^UlkNK

t t

on.

ai_^

CPU / CONNECTION INTERFACE
SCHEMATIC DIAGRAM

QUAD 2-INPUT
NOR GATE

IC16 G4

27

L

VIDEO CONVERSION / MEMORY
SCHEMATIC DIAGRAM

28

POWER REGULATOR SCHEMATIC DIAGRAM

H

HeCt47t-fl-fc4§

2>-

10-

HEC»47S-li-fc2i

SMI ESO-3975
-O^^O

POWER SUITCH

REGULATOR WttlA

IC17

UPC78LI5

7T

□ 163

1SS132
REGULATOR 5V 1A

iSIL

Sl-o

:@

D181

w

R161

► 1BV

29

SCHEMATIC DIAGRAM

RGB CONVERTER

" ""' wv-"-^

1IU

M R12T w ^ S*i&n

-<-3fo

Ms 3f:

■WfB

?5

Pdff-'K-T
HXC 1537-11 - 111

i-SJ

- en

30

GX4000 CABINET EXPLODED VIEW

GX4000 CABINET PARTS LIST

Ref. No.

Description

Part No.

Cabinet Parts

101

Cartridge Case Assy (UK/FR/SP)

41088

103

Knob, Power/Lock

270970

104

Spring Button

271018

105

Top Cabinet Ass'y
Cabinet Top
Glass LED
Plate Brand

270960

106

Flap A

270969

107

Flap B

271000

108

Spring Flap

271019

109

Knob Slide

270966

110

Angle Power Switch

270968

111

Plate Shield

271020

112

Bottom Cabinet

270964

Label, Rating Plate

270972

Leg Rubber

270965

31

MAIN P.C.B. FRANCE (Top View)

32

MAIN P.C.B. FRANCE (Bottom View)

R1S0

-:: : : ,V :::.KV. ^.>i i.r

— Q 2£^ x x

■* liigisC !**"(, lis I s

"°in .15. [ J

Z#n6 riW Rte' Ri^rf 2. -

JLJ03_

IC102

% I

MRI

Sill 38

- qx2Z

R18? R1|3 T P^ 4 £10'

Qt«? -Of 93

"R1.91

C140 C141 C142 > Q

R133 I -u | _

w

Df'Ot" J co

:cf28

o

+ % I

. 55

Q10$

R 1 7 : >*£•-•:

. /^N

i-'w

Bb'r

IS RT2I : £*°_

-■- X n

j 3 ? T QiVJ--

t xr /""n — +^

fn

l^o 1 2

l^ E _ 8 ■>

r 3

;:.:g33::,-

CI 83 J| 02

Ah

1 l&lg !cn*o>:s

r

J. X

JJ01

OT

33

POWER REGULATOR SCHEMATIC DIAGRAM (FRANCE)

W
HtCQ470-01-64D

□fe-T

XIV

ov

HeCQ470-01-420

I

1

»

D1J3

1S?13£

REGULATOR 5V 1A

IC181

L7AQ5

_ VI VO _

GND

1

_iJ

$

DIM

N

Riei *iov
*M- ■* ►

g 33 1/4U _ 03

r lis ,

34

OUTPUT INTERFACE (FRANCE)

M

a i % m

CI 01
25V&2

1

S J7

CI 85
25V2"2

<J

VIDEO B

fiiea

2SC1B15Y Rm

w* —

33

J§

OSYMC

JSP

-ST

on L N

3^

S5S

JO102
PERI-SCfiRT
HXC1537-01-010

cd

a: 1

o 7 "

CD ?

CD

CD"
CD 1 "
CD 1 "

•cp

-cp

, CD
■CD _jj

-CD

-CD
-CD
-CD

35

GX4000 ELECTRICAL PARTS LIST

Ref. No.

Description

Part No.

IC's

1C1

IC AMS40489 Gate Array

40489

IC2

ICZ8400AB1N CPU

40080

IC8

IC MC74HC4051N ANA Multi

270996

IC9

IC LA6393D Dual Op Amp

170112

IC10, 11

IC KM41 464AP-1 2 4064 RAM

173001

IC14

IC AY-3-8912Sound
Generator

40001

IC15

IC AMS40464 Video DAC

40464

IC16

IC PC74HCT02P Quad

N org ate

IC UPC78L05 Reg SVOIA

270999

IC17

190731

IC101

ICCXA1145P RGB Encoder

270975

IC102

IC UM1234E36 RF Modulator

271001

IC181

IC L7805 Reg SVIA

271002

IC401

IC AMS40982 Cartridge Gate
Array

40982

IC402

IC AMS40908 Cartridge Gate
Array

40908

Transistors

Q3-5, 102,

TR2SC1815Y, Silicon

177910

105-110,201,

202

Q101

TR2SA1015Y Silicon

1 70453

Diodes

D1

DSLZ336B-16A/B-T1 LED

271003

D10, 11, 120,

D 1SS132T

171582

121, 123-128,

183, 201, 202

D101

D MTZ6.8BT-77

171488

D130, 131

D 1SV68, Variable Cap.

271004

D1 32-1 37

D MTZ4.7BT-77

175021

D180

DGZB12B, ZENER

271005

D181

D 11ES1TA1, Silicon

271006

Coils

L1

Filter Line ESD-R-12C

270751

L3

Coil Inductor LAL03KH470K

270992

L101

Delay Line SDL4101

270993

L102

Filter Band Pass
H287BSJS-4438HWD

270994

L103, 104

Coil 10UH

1 75940

Switches

SW1

Switch Slide ESD-3975

170002

SW101

Switch Slide SSSS91 -749

270990

SW102

Switch Tact EVQ-QTE05G

270991

PCB's

PCB101

PCBASS'YMC0123

PCB401

PCB ASS'YMC0121

Miscellaneous

J2

Socket IC DILB40P-8J

271007

J101

JackDCHEC0470-01-640

271008

J102

JackDCHEC0470-01-620

271009

J103

Jack Modular 21 5876-1

271010

J 104

Jack DIN CSK1 50-81 -30-244

271011

J105

Jack RCA 3.5
HSJ1061-01-440

271012

PD001

Paddle

270792

X1

Crystal CX0-824C
39.9025MHZ

271013

X101

Ceramic Oscillator CSA6.0MG

271014

X102

Ceramic Oscillator CSA5.5MG

271015

Manual, Multi-Lingual

U1-GX4000

AC Adapter, UK

270974

AC Adapter, Euro

270973

Cartridge Assy

41088

Ref. No.

Description

Part No.

Resistors: Carbon VeW

22 OHM

R5, 89

152156

33 OHM

R46-54, 56, 57, 68, 69

152158

75 OHM

R106, 112, 129,130

152163

82 OHM

R80

152164

91 OHM

R72

152165

100 OHM

R120

152166

120 OHM

R81

152167

150 OHM

R13

152168

220 OHM

R87, 110, 119, 203,206

152170

270 OHM

R141

152171

330 OHM

R75

152172

360 OHM

R140

271021

390 OHM

R82

152173

470 OHM

R86, 117

152174

680 OHM

R74, 107

152176

750 OHM

R132

152177

910 OHM

R71

240204

1KOHM

R61-63, 90, 127, 131, 133,
134

152179

1.2KOHM

R73, 1 1 1

151180

2KOHM

R103, 135

271022

2.2KOHM

R2, 2

152183

3KOHM

R105, 116, 149, 151

271023

3.3KOHM

R76-78, 84, 88

152185

4.7KOHM

R1,27, 210

1 93789

5.6KOHM

R83

152189

10KOHM

R14, 17,58-60,64,67, 102,
125, 148

152194

15KOHM

R79

152196

20KOHM

R124, 126

157639

22KOHM

R65, 66, 91

152198

47KOHM

R139

1 52203

68KOHM

R143

1 52205

100KOHM

R202, 205

152209

180KOHM

R23-26

152212

220KOHM

R201.204

157641

Resistors: Carb

on 1 AW

33 OHM

R181

1 74852

Resistors: Meta

I 1 / 2 W

270 OHM

R153

176748

Resistors: Meta

I VeW

820 OHM

R109

271024

1KOHM

R32, 34, 36, 38, 40, 42

271025

2K OHM

R31, 33, 35, 37, 39, 41 ,43, 44

271026

3.9KOHM

R108

271027

6.98KOHM

R123

271028

27KOHM

R101, 113, 114, 147, 152

271029

33KOHM

R144

271030

47KOHM

R145, 146

178036

68KOHM

R70, 143, 150

271031

Capacitors: Cei

amic

47PF

C119

150515

82PF 50V

C1 40-1 42

270035

100PF50V

C27, 31, 106, 131

240221

330PF 50V

C24, 25, 135-137

150518

0.01UF

C105, 124, 134, 138, 139

157577

0.1UF12V

C1,2,8,'10, 11, 14, 15,
17-19,33, 110, 122, 133,
181, 183, 184, 401

240223

Capacitors: Ele

ctrolytic

1UF50V

C201,202

157563

10UF50V

C26, 32, 34

240462

22UF25V

C100, 101, 107, 109,
113-116, 118, 128

250409

100UF10V

C30, 35, 120

240463

470UF10V

C102-104, 121

270983

470UF16V

R182

157630

36

ELECTRICAL ADJUSTMENTS

MM-12
SECTION

1. BEFORE MAKING

ELECTRICAL ADJUSTMENTS

Read and perform these adjustments when
repairing the circuits or replacing
electrical parts,

CAUTION

Use an isolation transformer when performing
any service on this chassis.

Before removing the anode cap, discharge
electricity because it contains high
voltage.

When removing a PCB or related component,
after unfastening or changing wire, be sure
to put wire back in its original position,

1-1: Prepare the following measurement tools
for electrical adjustments.

1 . Frequency Counter

2. DC Voltmeter

2 BASXC ADJUSTMENTS

2-1: DC 12V

1 . Get the screen of initial pattern on screen
from PC.

2. Set the bright and contrast controls to
maximum position.

3. Connect the hot the digital voltmeter to
TP501. , . ,

4. Adjust the VR502 so that the digital
voltmeter indicates DC 12, 00 ± 0.05V.

2-2: DC 5V

1. Put the following loads in the DC cord and
set to the following values by using VR501.

2-5: V SIZE

LOAD

SETTING VALUE

Load 2.4A

DC 4.80±0.05V

Load 3.6±0.4A

DC 0V

No load(OA)

Less than 5.25V

2-3: H-HOLD

1. Shut off the input signal and set the

screen to the free-run condition.
2 Connect a frequency counter to CRT heater.
3. Adjust VR407 to obtain 15.625KHz reading.

2-4: SUB BRIGHT

1, Set the bright and contrast controls to
minimum position,

2. Adjust VR402 until letters of initial
pattern on screen can be seen slightly.

Get the screen of border 26 pattern from PC.

Set the bright and contrast controls to

maximum position.

Adjust the VR406 so that the width "A" in

border size become 152±2mm.

(Refer to Fig. 2-1)

1

152 ± 2mm

Fig. 2-1

2-6: CENTERING

1 . Set the bright and contrast controls to
maximum position.

2. Get the screen of border 26 pattern from PC
adjust it by means of the magnet on the
back of DY so that it comes to the center of
the screen.

MAJOR COMPONENTS LOCATION GUIDE

SI

SUB BRIGHT

®v

<B»

m VR502
©DC 12V

MONI T OP RC.BOAPD

37

MONITOR / CRT P.C.B. Component Layout

38

MM12 CABINET PARTS LIST

Ref. No.

Description

Part No.

Cabinet Parts

101

Cabinet Ass'y
Cabinet Front
Plate Brand

271173

102

Button Power

271413

103

Spring Button (B)

271414

104

Angle Curl Cord

271415

105

Stopper PCB

271416

106

Knob Control

271417

107

Angle Trans.

271418

108

Cabinet Back Ass'y
Cabinet Back
Sheet Rating (ask for

271174

UK/Euro)

271419

109

Angle Heat Sink

110

Cord Clamp No PEC-034-0

111

Cord Clamp No P-45

112

Sheet CRT Support

113

Spring Earth

PCB001

39

MM-12 MONITOR /CRT
SCHEMATIC DIAGRAM

waim

rt7^®®v4hmi

H^CpCD-p"

|-\(7) T (TyL 1 ^

'

note: this schematic diagram is the latest at the time

OF PRINTING AND SUBJECT TO CHANGE flTHOUT NOTICE.

Brh 5^Tl"ii t wit
— . ^ _ .FH5I1 F^fr

SE

CP5M
2-173271-2
QLUE /Ai . I , I ,J CD5II | 12IZ471M8

BROWN

TELLOU/GSECNl

1 ) 12t

40

MM12 EURO

41

MM12 ELECTRICAL PARTS LIST

Ref. No.

Description

Part No.

IC's

IC301

IC LA6358S

240015

IC351

IC LA4445

271162

IC401

ICUPC1379C

271163

IC501

IC L78MG-OEC

170446

IC502

IC PQ30RV2

271160

Transistors

Q401,402,

TRKTC1815

170447

504, 506

Q403, 404,

TRKTA1015Y

170453

503, 505

Q404

TR 2SD863E-AE

271164

Q406

TR2SD1159

171044

Q501

TR2SD1061

271410

Q801

TR KTC2229Y

170624

Diodes

D40 1,403,

D DS442X-BT, Silicon

1422117

408

D402, 405, 406

D10ELS6TA1, Rectifier

171550

D404, 407

D 11 E2TA1, Silicon

171049

D50 1-508

D 30D-1 FC, Rectifier

170625

D509

D11E1TA1, Silicon

171050

D802

D RD56FB, Zener

170627

Coils

L401

DY 7101 1207

271408

L402

Coil Linearity 21000006

171558

L403

Coil inductor 100UH

175867

Switches

SW501

Switch Push ESB-90217S

171511

PCB's

PCB001

PCBASS'YMM0053-S

PCB002

PCBASS'YMS0192

Miscellaneous

T401

Trans. Horiz. Drive RG-20852

271171

T501

Trans. Power

AC 0408020011 (UK)

2711 70/S

T501

Trans. Power

AC 05020021 (Euro)

271425

J801

Socket CRT SD-S1 01-1

271427

CV501

Cover AC Cord

271428

F501.503

Fuse Bet 2A (T) 250V

193357

F502

Fuse Bet 4A (T) 250V

152603

FB401

Transformer Flyback 2014001

177054

FH501.503,

Holder Fuse H0451

271429

505

FH502, 504,

Holder Fuse H0452

271430

506

S501

Spacer Bush-M

176849

SP301.302

Speaker SO8J60

271169

V801

Tube Cathode Ray
310GNBWD

271168

CD101

Cord DIN (7 Pin)

271176

CD502

Cord DC 6.5mm

271177

Variable Resist<

>rs

VR301

VROT EVJ-COOF25A24

271403

VR401

VROT EVU-G2AFA0007

271404

VR402

VRSF RHO632CE4R01

271405

VR404

VROTRK09K1110APPA

271406

VR406, 407,

VRSF RH0638CS2R02A

271407

501,502

Resistors: Meta

I Oxide

0.33 OHM 1W

R505, 512

271444

4.7 OHM 2W

R359

271445

10OHM2W

R437

271446

120 OHM 2W

R511

240216

180 OHM 1W

R435

271447

4.7K OHM 2W

R808

271448

Resistors: Solid

22M OHM V2W

R438, 439

271449

Ref. No.

Description

Part No.

Resistors: Carbon VsW

39KOHM R309, 310

1420145

Resistors: Carbon 1 AW

2.7 OHM

R431

271435

5.6 OHM

R427, 446

271436

100 OHM

R401-403, 418

240507

220 OHM

R357, 358

193589

330 OHM

R806

193591

390 OHM

R408, 805

271437

470 OHM

R407, 410, 426

193592

680 OHM

R409

240509

1KOHM

R353, 354, 404, 413, 449,
506-508,510,803

193594

1.2KOHM

R417,503

271438

1.5KOHM

R501 , 804

271439

2.2KOHM

R41 1,423

193595

2.7KOHM

R351 , 352, 440

193596

a

3.3K OHM

R502

193597

3.9KOHM

R412, 416

271440

<S>

5.6KOHM

R425, 445

10079

6.8KOHM

R513

193598

10KOHM

R406, 414, 415, 422, 448

24051 1

15KOHM

R424, 428

271442

18KOHM

R429, 434

193700

22K OHM

R305-308, 432

193701

33K OHM

R421,801,802

10097

47K OHM

R301-304, 419

240512

56K OHM

R447

10103

68KOHM

R420

271443

Resistors: Carbon V2W

150HM

R355, 356

271432

330 OHM

R430

174834

470 OHM

R360

201711

1.5KOHM

R509

250047

2.7KOHM

R807

176749

10KOHM

R433

271433

56K OHM

R436

271434

Capacitors: Ceramic

10PF

C802

193416

22 PF 50V

C421

193719

200PF

C401

172179

270PF 50V

C305, 306

157677

1000PF50V

C407

240222

0.0047UF 50V

C403

201719

0.033UF 50V

C406

153922

0.047UF 50V

C501-508

152645

Capacitors: Metal Plastic

1UF50V C410

271455

Capacitors: Plastic

0.0056UF C413

174818

Capacitors: Polypropylene

0.0033UF

C423

157740

630V

0.068UF400V

C424

170620

Capacitors: Electrolytic

1UF50V

C307, 308, 414, 420,422

157563

1UF160V

C426

271450

2.2UF 50V

C404

157672

3.3UF 50V

C512

271451

4.7UF 50V

C301.302

157565

10UF16V

C419, 511,513, 516

157581

10UF25V

C429

271452

10UF50V

C353, 354, 4-17

240462

10UF160V

C427

170608

22UF 63V

C801

170609

47UF16V

C35 1,352

172074

100UF16V

C357, 358, 411,412, 415

157568

100UF25V

C309

157569

220UF16V

C425, 428

240464

220UF 25V

C355

152565

330UF 25V

C515

170836

470UF16V

C517

157630

1000UF16V

C359, 360

271453

1000UF25V

C418

152567

2200UF25V

C356

157653

4700UF16V

C509, 514

271454

4700UF25V

C510

240241

42

CM-14
SECTION

43

CM 14 COLOUR MONITOR

ELECTRICAL ADJUSTMENTS

1. BEFORE MAKING
ELECTRICAL ADJUSTMENTS

Read and perform these adjustments when
repairing the circuits or replacing
electrical parts.

CAUTION

Use an isolation transformer when performing
any service on this chassis.

Before removing the anode cap, discharge
electricity because it contains high
voltage.

When removing a PCB or related component,
after unfastening or changing wire, be sure
to put wire back in its original position.

1-1: Prepare the following measurement tools
for electrical ad justments .

1. Oscilloscope

2. Frequency Counter

3. White Balance Signal Generator

4. White Balance Checker

5. DC Voltmeter

2. BASIC ADJUSTMENTS

2-1: +5V

1. Load 2.4A into DC out.

2. Connect the DC voltmeter to DC out.

3. Adjust VR501 until voltage is 4.8±0.03V. t

4. After adjustments, verify if the voltage is
less than 5.25V in no-load mode.

2-2: H-HOLD

1. Shut off the input signal and set the
screen to the free-run condition.

2. Connect a frequency counter to CRT heater.

3. Adjust VR403 to obtain 15.625KHz reading.

2-3: CUT OFF

1 . Shut off the input signal and set the
screen to the free-run condition.

2. Set the bright control to maximum position.

3. Set VR801, VR803, VR804 and VR805 to center
positions.

4. Connect the oscilloscope to collector of
Q802.

5. Adjust VR402 to obtain 125V as shown in
Fig. 2-1,

6. Then, short the first pin and the second pin
in CP402.

7. Keeping the condition, adjust the horizontal
line on the picture to a extent of lighting
faintly.

2-4: SUB BRIGHT

Shut off the input signal and set the

screen to the free-run condition.

Set the bright control to maximum position

Connect the oscilloscope to collector of

Q802.

Adjust VR402 to obtain 123 ~ 124V as show

in Fig. 2-2.

123-

124 V

Fig. 2-2

2-5: WHITE BALANCE

1. Input 75% white and 25% white patterns to
the monitor with the white balance signal
generator .

2. Set the SW1 of the white balance signal
generator to auto position. Adjust high
control of the white balance signal
generator until green of the white balance
checker is centered for 75% white. Adjust
low control until green is centered for
25% white.

3. Adjust VR802 and VR805 until blue of whits
balance checker is centered. Adjust VR801
and VR803 until red of white balance
checker is also centered.

2-6:V.SHE

1 . Set the bright control to maximum position

2. Receive the monocrome pattern.

3. Adjust VR406 to AB=CD as shown in
Fig. 2-3.

2-7: FOCUS

1. Set the bright control to maximum position.

2. Adjust the picture by using focus volume.

44

3. PURITY AND CONVERGENCE
ADJUSTMENT

NOTE

1 . Turn the unit on and let it warm up for at
least 30 minutes before performing the
following adjustments.

2. Place the CRT surface facing east or west
to reduce the terrestrial magnetism.

3. Turn ON the unit and demagnetize with a
Degauss Coil.

3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)

1. Tighten the screw for the magnet. Refer to
the adjusted CRT for the position.

(Refer to Fig. 3-1)

If the deflection yoke and magnet are in

one body, untighten the screw for the body.

2. Receive the green raster pattern from
color bar generator.

3. Slide the deflection yoke until it touches
the funnel side of the CRT,

4. Adjust center of screen to green, with red
and blue on the sides, using the pair of
puritv magnets.

5. Switcn the color bar generator from the
green raster pattern to the Crosshatch
pattern.

6. Combine red and blue of the 3 color
Crosshatch pattern on the center of the
screen by adjusting the pair of 4 pole
magnets .

7. Combine red/blue (magenta) and green by
adjusting the pair of 6 pole magnets.

3. Adjust the Crosshatch pattern to change to
white by repeating steps 6 and 7.

3-2: PURITY

NOTE

Adjust after performing adjustments in
section 3-1 .

1 . Receive the green raster pattern from color
bar generator.

2. Adjust the pair of purity magnets to center
the color on the screen.

Adjust the pair of purity magnets so the
color at ends are equally wide.

3. Move the deflection yoke backward (To neck
side) slowly, and stop it at the position
when the whole screen is green.

4. Confirm red and blue colors.

5. Adjust the slant of the deflection yoke
while watching the screen, then tighten the
fixing screw.

DEFLECTION YOKE
DEFLECTION YOKE SCREW
MAGNET SCREW

3-3: STATIC CONVERGENCE

NOTE

Adjust after performing adjustments in
section 3-2.

1. Receive the Crosshatch pattern from color
bar generator.

2. Combine red and blue of the 3 color
Crosshatch pattern on the center of the
screen by adjusting the pair of 4 pole
magnets ,

3. Combine red/blue (magenta) and green by
adjusting the pair of 6 pole magnets.

3-4: DYNAMIC CONVERGENCE

NOTE

Adjust after performing adjustments in
section 3-3.

1. Adjust the differences around the screen

by moving the deflection yoke upward/downward
and right/left. (Refer to Ffg. 3-2-q)

2. Insert three wedges between the deflection
yoke and CRT funnel to fix the deflection
yoke. (Refer to Fig. 3-2-b)

B G R

R --^

r ^

„ —

- f I

L.7

UPWARD/DOWNWARD SLANT

RIGHT/LEFT SLANT

Fig. 3-2-a

WEDGE POSITION
Fig. 3-2-b

6 POLE MAGNETS
4 POLE MAGNETS
PURITY MAGNETS

Fig. 3-1

45

MAJOR COMPONENTS LOCATION GUIDE

VR501
+ 5V

IC401

CP402

D

VR402

^ BRIGHT
^ 1 VR403

©Jh-hold

(4^1VR406
^V-SIZE

MAIN P.C. BOARD

CRT RC.BOARD

46

CM14 ELECTRICAL PARTS LIST

Ref. No.

Description

Part No.

Ref. No.

Description

Part No.

IC's

Variable Resistors

IC301

IC LA635S

240015

VR301

VROT EVJ-C00F25A24

271403

IC351

IC LA4445

271162

VR401

VROT EVU-E2AF25B52

271182

IC401

IC LA7800

1400106

VR402, 403,

VRSF EVNDXAA02B03

271183

IC402

IC LA7830

170444

407

IC501

ICSTK73410

271151

VR405

VROTRK09K1110APQA

271184

IC502

IC L78 MG-OEC

170446

VR406, 501
VR801

VRSFEVNDXAA02B13
VRSF 5K OHM Red

271185

171696

Transistors

VR802

VRSF 5K OHM Green

171697

Q401 , 402,

TR2SC1815Y, Silicon

170447

VR803

VRSF 5K OHM Blue

171698

506

VR804

VRSF 500 OHM Red

171699

Q403
Q404
Q405

TR 2SA950Y, Silicon
TR2SC2271-AE, Silicon
TR2SD1 877, Silicon

170448

1409202

271152

VR805

VRSF 500 OHM Blue

171700

Resistors: Carbon VeW

Q502
Q503, 505
Q504

TRSD1 667, Silicon
TR2SA1015Y, Silicon
TR2SC2120Y, Silicon

177045
170453
170113

39K OHM

| R309,310

152201

Resistors: Carbon 1 AW

Q80 1-803

TR2SC341 7, Silicon

271181

100 OHM
180 OHM

R1 01 -103, 810

R415, 807

240507
193588

Diodes

220 OHM

R357, 358,407,416

193589

D101-103

D GZA6.2 Y BT Zener

171552

270 OHM

R81 1,814

193590

D104-106

D GZA6.8 Y BT Zener

175636

330 OHM

R40 1,404

193591

D401.410

D1S2472T-77, Silicon

170455

1KOHM

R353, 354, 41 1,423, 432, 453,

193594

D402

D GZA1 1 Y BT Zener

810339

504,512,514-517,815,816

D405, 406,

D10ELS6TA1 Rectifier

171550

1.5KOHM

R420, 421,441

271439

408

1.8KOHM

R402, 403, 442, 462

271202

D407, 505

D DFD05TG-BT Rectifier

171490

2.2KOHM

R410

193595

D411

D11E1TA1 Silicon

171050

2.7KOHM

R1 04-1 06, 351,352, 817

193596

D501-504

D20E10FA1 3 Silicon

176039

3.3KOHM

R406

193597

D506, 507

D15DF6-FC Silicon

271180

8.2KOHM

R418, 419

271203

D508, 509

D30DF2-FC Silicon

171555

10KOHM

R428, 429

24051 1

D510

D R2M-LFB3 Avalanche

1400122

12KOHM
15KOHM

R409, 424

10087

R431

271442

Coils

22K OHM

R305-308, 414

193701

L401

Coil Linearity

271186

27KOHM

R425

193702

L501

Coil Line Filter AC

171502

33KOHM

R440

10097

L502

Coil Degauss

271187

47K OHM

R301-304, 412

240512

L801

Coil 100UH

1 75867

56KOHM
82K OHM

R417
R439, 463

10103
271204

Switches

120KOHM
150KOHM

R430'
R451

271205
271206

SW501

Switch Push ESB-90217S

171511

180KOHM
220K OHM

R408
R413

271207
193706

PCB's

PCB001

PCBASS'YMM0052-C

Resistors: Carb

on VaW

PCB002

PCBASS'YMS0191

1.5 OHM
15 OHM
220 OHM

R449
R355, 356
R433

271208
271432
271209

Miscellaneous

T401

Trans. Horiz. Drive 305Y001

171506

470 OHM

R445

201711

T501

Trans. Switching 8139012

271188

1KOHM

R513

240214

J801

Socket CRT HPS1 171-01-050

171514

2.2KOHM

R446, 460

271210

F501

Fuse Bet 2A(T) 250V

193357

2.7KOHM

R802-804

176749

FB401

Trans. Flyback 3714016

271189

4.7KOHM

R426

176750

FH501

Holder Fuse H0451

271429

120KOHM

R502

271211

FH502

Holder Fuse H0452

271430

270K OHM

R503

271212

ICP401
ICP501

IC Protector ICP-N50

IC Protector ICP-N20T1 04

171547

h tzr\ A A *~i

1MOHM

R801

271213

1 50442

ICP502

IC Protector ICP-N38T1 04

271157

Resistors: Cemi

ant

ICP503

IC Protector ICP-N75T1 04

171057

5.6 OHM 5W

R501

271214

SP301 , 302

Speaker S08J60

271169

15 0HM7W

R436

170417

TH501

Degauss Element
ERP-F5B0M180K

171533

Resistors: Fuse

able

V001

CRT370KRB22-TC21

271190

(SPYB)

Cord DIN (7 pin)

Cord DC 6.5 mm

3.3 OHM 1 / 2 W

R438

170138

CD101

271176
271177

8.2 OHM 1 / 4 W

R444

271215

CD502

Resistors: Meta

0.33 OHM 1W

Oxide

R510, 511

271444

2.2 OHM 3W

R508

271216

3.9 OHM 2W

R518

271217

15 0HM2W

R509

271218

22 OHM 2W

R433

271249

22 OHM 3W

R505

271219

33 OHM 3W

R506, 507

271220

82 OHM 2W

R519

271221

1KOHM 1W

R452

271222

3.9KOHM2W

R427

271223

15KOHM2W

R805, 808, 812

271224

47

CM14 ELECTRICAL PARTS LIST

Ref. No.

Description

Part No.

Capacitors: Ceramic

22PF

C416

271236

100PF500V

0403, 441

271237

220PF

C806

157575

220PF 500V

C423

174811

240PF

0804, 807, 808

271238

270PF

C305, 306

157677

270PF 500V

C433

271239

330PF

C803

240233

470PF 2KV

C510

176751

560PF 500V

C417

271240

680PF

C802

806223

1000PF2KV

C801

271241

1000PF500V

C512, 513

271242

1500PF2KV

C432

271243

2200PF 2KV

C502-504

174812

2200PF125V

C506

271244

0.001 5UF2KV

€511

271245

0.0022UF2KV

C509

271246

Capacitors: Plastic

0.0056UF C415

| 174818

Capacitors: Metal Polypropylene

0.0082UF

C431

271247

1600V

0.1UFAC250V

C501

171609

0.82UF 200V

C429

271248

Capacitors: Tantalum

1UF16V

C411

271234

2.2UF16V

C426

271235

Capacitors: Polyester

0.001 UF 50V

0303, 304, 401

240250

0.0015UF50V

C408

271230

0.0047UF50V

C421

271231

0.01 UF 50V

C413,427

250419

0.01 5UF 50V

C409

152389

0.039UF50V

C404

177154

0.047UF 50V

C406, 446

251526

0.056UF50V

C365, 366

157546

0.068UF50V

C41 0,428

271232

0.1 UF 50V

C361 , 362

250066

0.15UF100V

C422

271233

Capacitors: Electrolytic

1UF50V

C307, 308, 414,508

157563

1UF160V

C419, 445

271225

2.2UF50V

C440, 444

157672

4.7UF50V

0301,302,407, 420

157565

10UF16V

C519

157581

10UF25V

C517

271452

10UF50V

C353, 354

240462

10UF100V

C507

271226

22UF250V

C430

170419

47UF16V

0351,352,418

172074

100UF16V

C357, 358

157568

100UF25V

C309

157569

100UF35V

C425

157570

1 SOU F 400V

C505

157792

220UF25V

C355

152565

220UF160V

0514

170851

470UF16V

C405

157630

470UF25V

0356

271227

470UF 35V

0515

150919

1000UF10V

C51 8

271228

1000UF16V

C359, 360

271453

1000UF25V

C51 6

152567

1000UF35V

C402

271229

2200UF25V

C424

157653

48

CM-14 MONITOR / CRT P.C.B. Component Layout

1 2 3 4 5 J
I I I 1 I I

r:.'v"

49

CM-14 POWER / SOUND SCHEMATIC DIAGRAM

50

WIGHT

YMQ1
5dOB

100P SL

C '^

I 1 2SC1815T

i_ BRIGHT

If

12.7

6.8/

0403

2SR55QY

BRIGHT

BUFFER

<D-

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CM-14 MONITOR SCHEMATIC DIAGRAM

H

1234 5 tlrlel cp > 01 17 ""- 8

TT

R433

— VA-

R460

-VW-

2.2K 1/2U

A /(yERTICRLf &0LTRGE

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R463 C445 "®

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ur 401

TS-80P-04-V1

R439

C426

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r

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I 10FXS6 T

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R438

3.3 1/21

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a

R. OUTPUT f

Q801

2SC3417.

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£< H VR801 8

rfr

TO POWER

PCB001 MHQQ52

4r-4r

4. 4.7V P-P 3. 9.6V P-P

vw

7. 'l.OV P-P 8. 150V P-P

U_L

9. 850V P-P 10. 54V P-P

WLdt

\_JI_JL.

11. 4.5V P-P 6. 105V P-P

G. OUTPUT

0802

2SC3417

©-

4

R817
l VW-

1

StS

r

B. OUTPUT

Q603

2SC3417

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is

□

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3 B. CUT OFF o--
VR803
5KB

B. DRIVE

PCS002 MS0191

CD101 DIN SPIN CORD
8AE0OOO4

51

CM-14 CABINET EXPLODED VIEW

206

PCB002
1 | SP302

SP301

CM14 CABINET PARTS LIST

204

PCB001

Ref. No.

Description

Part No.

Cabinet Parts

101

102
103
104
105
106
107
108
109
110

111
112
113
114
115
116

Cabinet Front Ass'y

Cabinet Front

Plate Brand

Button Power

Spring Button (B)

Angle Curi Cord

Stopper PCB

Knob Control

Shield Trans

Card Spacer KGPS8R

Angle FBT

Cabinet Back Ass'y

Cabinet Back

Sheet Rating

Spring Speaker

Cord Clamp No. PEC-034-0

Sheet CRT Support

Sheet CRT Support

Plate Earth Wire

Spring CRT Earth

271155

271413
271414
271415
271191
271175
271192
271193

271156

271197

52

SM-CPCPLUS/GX